138875480

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{15569}}^1$

素因数の和:15803

約数の個数: 32

約数和(自身を含む): 313891200

約数和(自身を除く): 175015720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 15569, 31138, 62276, 77845, 124552, 155690, 311380, 622760, 3471887, 6943774, 13887548, 17359435, 27775096, 34718870, 69437740, 138875480]

約数ペア:

[(1, 138875480), (2, 69437740), (4, 34718870), (5, 27775096), (8, 17359435), (10, 13887548), (20, 6943774), (40, 3471887), (223, 622760), (446, 311380), (892, 155690), (1115, 124552), (1784, 77845), (2230, 62276), (4460, 31138), (8920, 15569)]